8 SH2 *sh2; // active sh2
10 int sh2_init(SH2 *sh2, int is_slave)
14 memset(sh2, 0, sizeof(*sh2));
15 sh2->is_slave = is_slave;
16 pdb_register_cpu(sh2, PDBCT_SH2, is_slave ? "ssh2" : "msh2");
18 ret = sh2_drc_init(sh2);
23 void sh2_finish(SH2 *sh2)
30 void sh2_reset(SH2 *sh2)
32 sh2->pc = p32x_sh2_read32(0, sh2);
33 sh2->r[15] = p32x_sh2_read32(4, sh2);
36 sh2->pending_int_irq = 0;
39 void sh2_do_irq(SH2 *sh2, int level, int vector)
42 p32x_sh2_write32(sh2->r[15], sh2->sr, sh2); /* push SR onto stack */
44 p32x_sh2_write32(sh2->r[15], sh2->pc, sh2); /* push PC onto stack */
46 /* set I flags in SR */
47 sh2->sr = (sh2->sr & ~I) | (level << 4);
50 sh2->pc = p32x_sh2_read32(sh2->vbr + vector * 4, sh2);
52 /* 13 cycles at best */
53 sh2->cycles_done += 13;
57 void sh2_irl_irq(SH2 *sh2, int level, int nested_call)
59 sh2->pending_irl = level;
60 if (level < sh2->pending_int_irq)
61 level = sh2->pending_int_irq;
62 sh2->pending_level = level;
65 // not in memhandler, so handle this now (recompiler friendly)
66 // do this to avoid missing irqs that other SH2 might clear
67 if (level > ((sh2->sr >> 4) & 0x0f)) {
68 int vector = sh2->irq_callback(sh2, level);
69 sh2_do_irq(sh2, level, vector);
76 void sh2_internal_irq(SH2 *sh2, int level, int vector)
78 // FIXME: multiple internal irqs not handled..
79 // assuming internal irqs never clear until accepted
80 sh2->pending_int_irq = level;
81 sh2->pending_int_vector = vector;
82 if (level > sh2->pending_level)
83 sh2->pending_level = level;